What is a Flow Control Valve?

Two types of flow control valves: a Mechanical Dump Valve and a High Pressure Control Valve

What is a Flow Control Valve?

A flow control valve regulates the flow of liquid or gas. There are many varieties of flow control valve. In this article, we’ll explain the operation of two common types: a High Pressure Control Valve and a Mechanical Dump Valve.

High Pressure Control Valve

High Pressure Control Valve is a versatile product that can be used in both flow control and pressure control applications. For example, in flow control this valve can be utilized as a liquid dump valve.

This valve will remain in its fail position until it’s told to do otherwise by a pilot.

In a liquid dump application, it will receive a pneumatic signal from a liquid level controller to open and dump the liquid. In a pressure regulating application, a pressure pilot monitors upstream or downstream pressure, and when it needs to make an adjustment it will send a pneumatic signal to the valve actuator to open or close it.

The flow through the stem-guided high pressure control valve comes from on top of the seat. This type of valve offers precise control with the small Cv trim options.

Kimray’s High Pressure Control Valve can also be field converted to fail open or close with simple hand tools.

Mechanical Dump Valve

Another common type of flow control valve is the Mechanical Dump Valve.

A Mechanical Dump Valve is a component of a liquid level control system used to maintain and control the liquid level in production vessels.

A mechanical liquid level control system is made up of five primary parts: Trunnion Assembly, Float Arm, Flat, Linkage Rod, and Mechanical Dump Valve.

A dump valve is connected to downstream piping. When the float rises to the desired level, the linkage rod rises, lifting the arm on the dump valve. This opens the valve and “dumps” the liquid from the vessel downstream to be further processed or sold.

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Breck Swigart serves as a Product Manager at Kimray, and is responsible for Kimray’s line of pneumatic valves, pneumatic pilots, regulators and temperature controllers. He collaborates with Kimray’s engineering, manufacturing, and quality teams to optimize the performance of our products and make a difference for our customers.